SMF CPU Usage Vs Drupal Vs Vbulletin

[gav240z]

Hi Everyone,
I'm hoping someone has experience in this situation. I'm currently being told off for CPU usage on 1 of my sites.

I belive the problem may be SMF Forum, it has been upgraded to the latest version of the script but I cannot enable caching as my server does not support the accelerators used by SMF.

I want to migrate the entire site to use Drupal, but I'm not sure if my shared hosting environment will handle it well or not, although Drupal seems very efficient to me.

I'm actually considering migrating to vbulletin because many people claim its much more efficient. My only issues with vbulletin are:

1. All vbulletin sites look the same including this 1
2. I don't really want to pay an ongoing licence cost for vbulletin
3. I'm not sure if migrating will fix the issue or not

I guess I'd like to know what scripts are more / less efficient?

 

[gav240z]

Rephrase the question...

Ok let me rephrase the question.

Is Vbulletin an efficient forum script compared with say SMF, PHPBB3, Invision Power Board?

I have a site that generates around 200,000 pageviews per month. I currently run SMF which doesn't have a file cache system in its current build 1.0.

So I'm looking for a more efficient script?

Suggestions / tips?